Coal mining and drilling machine



3 Sheets-Shet 1.

(No Mouei.

. W WEAVER Coal Mining and Drilling Machine. N0. 229,78L Patented July.6,1880.

N. FEFERS, PHOTO-LITHOGRAFHER, WASHINGTON. D, (L

3 Sheets-sneer, 2. W WEAVER Coal Mining and Drilling Machine. No. 229,781. Patented July 6,1880.

N, PETERS, PHOTO-LITHDGRAPHER (No Model.) 3 Sheets-Sheet 3.

W.-WEAVBR. Coal Mining and Drilling Machine.

No'. 229,781. Patented July 6,1880.

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UNITED STATES PATENT OFFICE.

WILLIAM WEAVER, OF PHCENIXVILLE, PENNSYLVANIA.

COAL MINING AND DRILLING MACHINE.

SPECIFICATION forming part of Letters Patent No. 229,781, dated July 6, 1880.

Application filed May 21, 1880.

new and useful Improvements in Coal Mining and Drilling Machines; and I do herebyde clare the following to be a full, clear, and exenable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to an improvement in coal mining and drilling machines and it consists in the combination and arrangement of parts, which will be more fully described hereinafter, whereby the machine is adapted equally well for use in mines, where the standards can be braced against the ceiling above, or can be used Where the ceiling is too high to be reached, or for surface work.

The object of this invention is to provide a .machine by means of which a hole can be bored at any angle, or any number of holes can be bored side by side, either in horizontal or vertical lines, and in which the feed is automatic, so that all that the person working the machine has to do is to adjust the machine in position and then turn the cranked boringshaft, and the drill will :be fed forward at any desired rate of speed.

The accompanying drawings represent my invention in different positions.

Figures 1, 2, and 4 are perspectives of the machine when adjusted for surface work. Figs. 3 and 5 are perspectives of the machine when used where the ceiling can be reached. Fig.

5 is a perspective of the standards adapted to support theoperating-tools. Fig. 7 shows the machine used upon a single standard. Fig. 8 shows the standards braced between two vertical walls. Fig. 9 is a perspective of the machine where but three standards are used. Fig. 10 is a planview of the operating'parts of the" drill. Fig. 11 is a plan view of the drillpoint. I Y

. A represents two standards, which are provided with the sharp screw-feet B, for the purpose of bracing the standards in position upon any kind of surface. These standards may be of any desired length, and have a suitable (No model.)

number of holes made through them, so that the slides or extensions 0 may be bolted thereto, as shown, for increasing the length of the standards to any desired degree.

Where the ceilings are not too high the standards can be increased any length until they reach the ceiling, against which they can act description of the invention, such as will be tightened in place by means of the screwfeet B.

Where theceilings cannot be reached the standards are not increased very much in length, and they are connected together horizontally by means of the perforated cross-bar D and trough E.

The machine thus formed may be braced or supported at any desired angle by means of the rear braces, E, which consist of perforated bars or slides, like the ones 0. As the holes in all of these braces or slides register, it is evident that any desired number of them may be bolted together, for the purpose of making the standard or brace of any desired length. These braces are also connected together horizontally by means of the cross-bar G.

Upon the outer sides of the standards, braces, or horizontally-conneetin g pieces there may be secured any number of U or L shaped pieces, H, which serve as supports for tools of various kinds, which are used for breaking away the thin shells between the holes which have been bored by the drill, or for any other purpose.

The trough E, which connects the lower ends of the standards together, serves for a receptaclefor heavy weights, which are used to steady the machine in doing surface work, or where the standards cannot be secured rigidly in position'between the floor and ceiling. Of course, where the standards .can be made to reach the ceiling this trough will never be necessary. Where but a single one of the standards is being used, instead of two, as here shown, a much smaller and shorter trough, I, can be attached to the standard, for the purpose of receiving the weight which is to steady the machine in position.

The cross-bar D has a segment of a circle upon each end, which segments have a number of holes made through them, so that the cross-bar can be turned to any desired angle and then bolted to the standard, so as to hold it rigidly in place. There are also a number of perforations made through the cross-bar itself, so that the clamp which holds the drill can be adjusted from one hole to the other, as may be desired. This clamp is made to open, so that the cranked screw drill-rod can be insertcd and removed at pleasure.

Projecting outward upon the left side of the drill-rod is an arm, J, which has the two ears K formed upon its top, and through which ears passes the screw L. Upon this screw is placed a stop, M, which can be adjusted back and forth to any desired position between the two cars by simply turning the screw which is provided for this purpose. This clamp is held securely upon the cross-bar D by means of the plate which extends underneath the bar D, and is fastened to the arm J by means of suitable clamping-bolts. This plate prevents the clamp from becoming accidentally displaced at any time.

Upon one end of the screw drill-rod is secured a crank, N, and near the center of the rod is formed a second crank, 0, so that one or more persons can unite in turning the rod while boring a hole. Around this rod is passed a sleeve, P, which passes through the clamp and serves to prevent the screw-thread upon the drill-rod from being injured. 0n the inner end of this sleeve is formed a flange, Q, and between this flange on the sleeve and the clamp is placed a rubber spring, R. 0n the screw-rod itself is placed a nut, S, which has two or more projections on its outer side for the purpose of catching against the adjustable stop. As this rod is being fed forward these projections on the nut catch against the stop and impede the forward motion of the nut until the rubber spring has again been sufliciently compressed to overcome the resistance of the stop against the nut, when the projection on the nut slips past the stop, and the spring forces the drill-rod forward. As the force of the spring is expended the projections on the nut again catch against the stop and again cause the compression of the spring, as described, until the force of the spring overcomes the frictional contact of the nut against the stop, when the projections on the nut again slip past and allow the spring to exert its pressure in forcing the drill-rod forward. In the end of the drill-rod, just beyond the inner crank, there is made a screw or other suitable socket, into which a suitable screw drilling-bit may be secured or otherwise fastened.

Where but a single standard is being used a supporting-piece, U, may be clamped to the side of the standard for the purpose of supporting the clamp. This supporting-piece U consists of a flat horizontal bar having a number of holes made through it and having a segment of a circle upon one end, which segment has a number of perforations through it, similar to the cross-piece D, so that it can be readily secured at any desired angle. Where but a single standard is being used, as here shown, an additional foot, V, provided with a screw, W, may be used for bracing the standard rigidly in position.

Where but a single standard is being used, as in surface work, it may be braced in position by means of the two hind braces, which have their upper ends clamped to the side of the standard by a single bolt, the upper ends ot'these braces being slightly bent outward, so that their lower ends are separated at suitable distance from each other. Where the ceiling can be readily reached no rear braces are needed, in which case the two standards will be connected together by means of the crosspiece D, which supports the drill-rod in position. This cross-piece D can then be adjusted vertically upon the two standards, and the drill-rod can be adjusted from side to side, so as to bore the holes in any desired relation to each other.

After all the holes have been bored any desired number or form of rests for the tools for breaking away the shell being secured upon the standard, as already described, by resting the long rods upon these supports, and then reciprocating them back and forth and moving them up and down, all of the thin walls between the holes may be broken away. By boring a number of holes side by side, and then breaking away the thin intervening shells, the coal or other material being mined can be broken down without blasting or breaking the coal up into such small pieces.

Where the boring is light and easy a coiled spring may be used upon the drill-rod; but where the drilling is in any way heavy or diflicult a block of rubber, as here shown, is pre-. ferred.

The boringbits used upon the auger have a recess made in their inner ends,so as to fit over the flattened portion of the auger, whereby, when the bit has become dull, it can be readily removed and replaced by another. The edges of this auger are made sharp, so as to cause them to clear the material out of the hole very rapidly and easily.

In the patent granted to me May 25, 1880, is shown a slotted arm and a movablestop, which has to be adjusted by hand and clamped in place by means of a set-screw. This mannor of adjusting the stop requires considerable effort and time-two disadvantages which are entirely overcome by placing the stop upon the screw, as here shown. By having the projections upon the not upon the drill-rod it operates much more smoothly than where it has to catch against the sharp corner of the stop alone.

Having thus described my invention, I claim- 1. The combination of the drill-clamp, an arm provided with ears or projections, an adjustable screw, and a movable stop with the nut on the drill-rod, substantially as set forth.

2. The combination, with a standard or standards, of the U or L shaped supports upon which the mining or drilling tools are supported, substantially as specified.

3. A drill-shaft provided with a crank upon 5 its rear end, and a crank in between the anger and the feed-clamp, whereby one or two persons can operate the drill-rod, substantially as shown.

4. The nut on the drill-bar provided with 1o projections on its forward end for catching againstthe adjustable stop, substantially as described.

5. The combination of the nut provided with projections on its forward end, a sleeve pass I 5 ing through the clamp and provided with a WILLIAM WEAVER.

Witnesses:

B. F. WIDDIOOMBE, B. H. VAN'DUSLEY. 

